|
|
|
||||
|
|
|||||
Purpose: The purpose of this program is to calculate z-scores for either sample (i.e., single) observations or for sample means. In each case the formula is displayed.
Download: You can download this program from within Stata by typing findit zcalc (see How can I use the findit command to search for programs and get additional help? for more information about using findit).
Use of program: To use this program, in the Stata command window type zcalc and then either (1) three numbers indicating x (i.e., the value of an observation), the mean and the standard deviation, or (2) four numbers, indicating the mean, mu, the standard deviation and n (i.e., the sample size).
Examples: The following example shows how to use zcalc to calculate the z-score for a single observation. In this example, x(observation) = 20, mean = 10 and standard deviation = 50.
The following example shows how to use zcalc to calculate the z-score for sample means. In this example, the mean = 20, mu = 10, the standard deviation = 50 and n = 50.
UCLA Researchers are invited to our Statistical Consulting Services
We recommend others to our list of Other Resources for Statistical Computing Help
These pages are Copyrighted (c) by UCLA Academic Technology Services